DE10307149A1

DE10307149A1 - Folding vehicle seat

Info

Publication number: DE10307149A1
Application number: DE2003107149
Authority: DE
Inventors: Michael Teich
Original assignee: Deere and Co
Current assignee: Deere and Co
Priority date: 2003-02-20
Filing date: 2003-02-20
Publication date: 2004-09-16
Also published as: US20040164598A1; US6916057B2; EP1449711A3; EP1449711A2

Abstract

The invention relates to a vehicle seat, in particular a passenger folding seat for agricultural or industrial vehicles, which contains a seat part (10) which can be pivoted from a seated position into a folded-up position. DOLLAR A In order to provide a simple, easy-to-use vehicle seat, which takes up little space when folded up and which is stably supported with a simple construction, it is proposed that a slide bearing device (72) be provided in the rear region of the seat part (10) which, on the one hand, is guided so as to be translationally displaceable in a guide (24) which can be mounted on the vehicle stand and, on the other hand, is pivotably mounted about an axis (76) of the slide bearing device (72). When the seat part (10) is folded up, the slide bearing device (72) slides downward from an upper position along the guide (24) and at the same time rotates relative to the guide (24).

Description

The invention relates to a vehicle seat, especially passenger folding seat for agricultural or industrial usable vehicles, with a seat part, which from a sitting position is pivotable into a folded position.

In the DE-A-22 27 659 describes a passenger folding seat with footrest for agricultural vehicles. The seat consists of four bars arranged in a rectangle, which are covered with a fabric and form a seat frame. A rear spar of the seat frame is mounted in a pivot bearing attached to the vehicle fender, so that the seat frame can be pivoted upward about a horizontal axis onto a fender shell. It is a very simple, uncomfortable passenger seat without upholstery and backrest, which seems to be intended primarily for children.

The DE 21 59 689 C3 describes a passenger seat for tractors, tractors, construction machinery and the like which can be swiveled away into a non-use position and which consists of a multi-part linkage which is connected by hinges and which is to be kept in use and non-use position by chain-like connections or loops. This construction has the option of changing the direction of use of the front passenger seat by moving the connecting chains. Otherwise, the construction does not meet today's safety requirements, since the connecting chains do not allow locking or precise fixing of the seat position.

The basis of the invention Task is seen in a vehicle seat of the aforementioned Specify the way in which the problems mentioned are overcome become. In particular, a comfortable, foldable vehicle seat is to be provided be that with a simple structure and ease of use in its folded up takes up little space, so that unhindered access to the driver's seat of the vehicle is guaranteed is. The vehicle seat should both in its seating position as well be stably stored in its non-use position and the safety requirements suffice.

The object is achieved by the Teaching of claim 1 solved. Further advantageous refinements and developments of the invention go from the dependent claims out.

According to the invention in the above Vehicle seat in the rear area of the seat part a slide bearing device provided which is translational in a guide that can be mounted on the vehicle stand slidably guided and on the other hand pivotable about an axis of the slide bearing device is stored. This will turn the seat part out of its Sitting position not only in its non-use position an axis swiveled. Rather, the pivoting movement is a translational one Motion overlaid, so that the slide bearing device along from an upper position the leadership slides into a lower position and at the same time relative to guide twisted.

Preferably, one that can be mounted on the vehicle stand Backrest part intended. In its folded-up position, the seat of the seat part lies on the back surface of the Part of the backrest. As a result of the sliding displacement and rotation of the seat part when it is folded up, it is lowered so that it can also be used a comfortable seat part that has a sufficiently long seat, the front edge of the seat part when folded up does not have the Upper edge of the backrest protrudes.

The leadership can be done in a simple manner form that they by at least a first plate and a second plate is formed. It can be the case with the two plates are simple, flat or angled steel strips. However, it can also plate-shaped Elements are used, for example with stiffening elements (Ribs) or other special features designed to perform other functions are. A first area of the first plate and a first area the second plate are essentially flat and are superimposed in parallel arranged (overlapping areas). These first two areas are spaced from each other, so that an intermediate space of constant width is formed. This gap receives the slide bearing device at least partially, so that these to the opposing ones Support plates can and is guided between the plates.

The first plate preferably carries the backrest part, by getting yourself over the overlap area protruding leg that, for example, in the backrest part protrudes and mounting options for the Backrest part contains.

The two plates are convenient using spacers, for example spacer sleeves, with one another connected, e.g. B. screwed. The unit formed in this way from the first and the second plate can be on the vehicle stand, preferably on the fender Be attached to the tractor. For this attachment can z. B. screws that connect the first and the serve second plate, can be used. It is also possible to get one fixed connection between either the first or the second plate on the one hand and the vehicle status on the other.

According to a preferred embodiment According to the invention, the first plate can be designed as a flat component in which the overlap region and a leg adjoining it lie in one plane. As a result, the first regions of the two plates, which are arranged parallel to one another, assume essentially the same orientation as a backrest part mounted on the leg. The two plates can be attached to a support surface (fender) at the vehicle stand, in particular inside a vehicle cabin, which is inclined with respect to the vertical. In the assembled state, the plates thus assume an inclined position with respect to the vertical and run from a lower area in front with respect to the direction of travel of the vehicle to a rear, upper area. The plates can enclose an angle of, for example, 60 ° to 70 ° with the horizontal, so that there is a comfortable backrest position.

Another preferred embodiment the invention provides that the seat part on a third plate is mounted. At least a first area of the third plate lies in sitting position over the first regions of the first and the second plate and is essentially parallel to the overlap areas the first and second plates aligned.

Preferably, the third plate a first and a second area, the one to each other Include angles. An edge can be formed between the two areas his. It is advisable that the second area of the third plate is essentially the same Alignment takes like the seat part, and that the seat part fits can attach this second area. The angle between the For example, both areas of the third plate can have values between 110 ° and Take 120 °, what about that already mentioned Tilt angle of the backrest part and corresponds to a substantially horizontally oriented seat part.

According to a preferred development the invention is the plain bearing device in the range in the sitting position attached to the upper edge of the third plate. It preferably points two pin elements that are aligned horizontally when the vehicle seat is installed are and the expedient are cylindrical. In the area of each side of the third Plate is a pin element arranged such that the free Pin ends are directed towards each other and engage in the guide.

The second plate also expediently points a first and a second area, the one with each other Include angles, so that in the sitting position the second area of the second plate is parallel is aligned with the second area of the third plate and below of the second area of the third plate. So are in sitting position these two second areas essentially parallel to each other aligned. The angle between the two areas of the second For example, plate can also take values between 110 ° and 120 °. In the sitting position is the second area of the third plate and with you the seat part aligned substantially horizontally.

A particularly preferred embodiment of the Invention provides that from the third plate one towards protrudes the second plate facing locking element, which into a central longitudinal slot formed in the second region of the second plate intervenes. If a third plate is used, the first and second Include an angle to each other in the area, this is the locking element preferably arranged in the kink area and protrudes outwards. This measure ensures that the seat part is guided laterally when swiveling guaranteed is.

In addition to this, it is particularly advantageous if the locking element contains a head area which protrudes from the second plate and its dimensions are larger than the width of the longitudinal slot is. When swiveling the seat part, this is with the third Plate and the slide bearing device along the in the second Plate trained slot positively guided. When lifting the seat part therefore the third plate cannot move away from the second plate, so that the slide bearing device is forced to follow along the guide to move down. This supports the desired Sequence of movements, consequently when swiveling the seat part translational height change in its rear area.

Once the glider is a lower end position in the guide reached, the head area of the locking element should be released and no longer from the longitudinal slot be held back so that an unimpeded further swiveling up of the seat part takes place can. Therefor it is appropriate to the longitudinal slot to train an extension which is an insertion and extraction of the head area allows. The location of the extension results from the location of the head area, the this occupies when the slider is in its lower End position. With an angled second plate the extension expediently in a secluded area with respect to the fold area of the second plate Position.

Preferably, at the lower end of the first plate, which is opposite the backrest part, a central slot is provided, which serves to receive a nose, which is formed at the rear end of the third plate, which is located behind the rear of the seat part. When the seat part is completely raised, the nose engages in the slot and forms a lateral locking of the seat part. The slot expediently has a conically opening towards the lower end of the plate Section so that the nose can easily be threaded into the slot when the seat part is folded up.

According to another preferred Embodiment of the invention is for comfortable pivoting an operating lever of the seat part provided that around the vehicle stand or parts of the guide a pivot bearing axis is pivotally attached and by a spring is pressed against the underside of the seat part. The spring force is measured so that it is lifting the seat part support however, it is not sufficient to lift the seat part automatically.

It is advantageous to use the operating lever to attach at least one rotatable roller, which is in a to Pivot bearing axis spaced area and the pivoting of the seat part rolls on the underside of the seat part. The role is transferred the spring force on the seat part. By using a role are disruptive frictional forces between actuating lever and seat part reduced.

Preferably at the free end of the actuating lever a handle is arranged which allows the operating lever from the seat part swing away.

To lock the seat part in its completely installed position, it is of particular advantage if from the operating lever a tab facing the seat protrudes. On the bottom a pin is attached to the seat part or to the third plate. If the seat part in its fully erected position is pivoted, the tab engages on the side of the pin and prevents an independent Folding down the seat part, for example as a result of the braking of the Inertia occurring in the vehicle. The Locking between the tab and the pin can be done by hand actuating lever solved become.

Based on the drawing, which is an embodiment shows the invention, the invention and others are below Advantages and advantageous developments and refinements of Invention closer described and explained.

It shows:
1 the side view of a foldable vehicle seat according to the invention in the folded down sitting position,
2 the side view of a vehicle seat according to 1 in half raised position,
3 the perspective view of a vehicle seat according to 1 in the fully raised position,
4 a backrest part with a first plate attached to it,
5 the perspective view of a second plate and
6 the perspective view of a third plate.
From the 1 to 3 the result is a foldable vehicle seat that is arranged next to the driver's seat, for example, in an agricultural work vehicle such as an agricultural tractor, and serves as a passenger seat. The vehicle seat contains a seat part 10 with a seat 12 , a leading edge 14 and a bottom 16 as well as a backrest part 18 with a back surface 20 and an upper edge 22 ,
The backrest part 18 is on a tour 24 rigidly attached, which in turn by means of screws 26 rigidly attached to a console, not shown, in a vehicle cabin, preferably on the fender. The console does not run vertically, but encloses an angle of approx. 65 ° with the vertical, so that the guide also 24 has this orientation when assembled. The seat part 10 is in 1 in its folded down position, in 2 in a middle position and in 3 shown in a folded up position when not in use.
The leadership 24 is essentially through a first plate 28 , a second plate 30 and fasteners in the form of screws 26 and spacers 32 between the two plates 28 . 30 are arranged and through which the screws 26 extend, formed. The screws 26 run through holes 34 . 36 the first plate 28 and the second plate 30 that in the 4 and 5 are shown. The spacers 34 hold the two plates 28 . 30 at a distance so that between the plates 28 . 30 a space 38 constant width is formed.
The first plate 28 contains a first, the leadership 24 assigned area 40 and a leg molded onto it 42 that extends into the interior of the backrest part 18 extends and the attachment of the backrest part 18 serves. The first plate 28 is an essentially flat sheet metal part. It contains at its lower end 44 a middle slot 46 , a section that opens conically to the plate edge 48 having.
The second plate 30 contains a first, the leadership 24 assigned flat area 50 and a second attach to the first area 50 adjoining flat area 52 , The second plate 30 is angled so that its two areas 50 . 52 form an angle of approximately 115 °. To the second area 52 closes a warehouse 54 with two opposite tabs 56 , passing through the tabs 56 drilling 58 extend that define a pivot bearing axis. In the second plate 30 runs a longitudinal slot 60 starting from the crease edge 62 between the first area 50 and the second area 52 along the second area 52 to the warehouse 54 extends. Except for an extension 64 has the longitudinal slot 60 a constant width on. The extension 64 is in the second area 52 far from the crease edge 62 and near the warehouse 54 , The second plate 30 can be manufactured from a correspondingly cut sheet metal part by bending.
It is an in 6 third plate shown in more detail 66 provided a first flat area 68 and a second flat area 70 having. The third record too 66 is angled with its two areas 68 . 70 form an angle of approximately 115 °. At the free end 71 of the first area 68 a slide bearing device is attached. The plain bearing device consists of two cylindrical bearing elements 72 each one section 74 large diameter and a spigot 76 have a small diameter. The cross sections of the cones 76 are to the width of the space 38 between the first and the second plate 28 . 30 adjusted and can be in the space 38 move and twist. The two bearing elements 72 are each with their section 74 laterally at the free end 71 of the first area 68 , for example by welding, fastened such that the two pins 76 face each other and form an axis. In the middle of the free end 71 of the first area 68 the third plate 66 there is a bulge 78 inside of a nose 80 protrudes.
In the middle of between the two areas 68 . 70 the plate 66 trained crease edge 82 there is a hole 84 which is a bolt-shaped locking element 86 which points outwards and therefore in 6 is not visible. The locking element 86 contains a shaft and a head area 87 , The shaft of the locking element 86 is dimensioned so that it is within the longitudinal slot 60 the second plate 30 can slide. The diameter of the head area 87 is however larger than the width of the longitudinal slot 60 , He can only in the area of enlargement 64 of the slot 60 in the slot 60 introduced and pulled out of it.
On the second area 70 the third plate 66 the seat part 10 Mount rigidly, for example, with screws. From the bottom 16 of the seat part 10 or from the third plate stands near the locking element 86 a cone 88 before, the meaning of which will be explained later.
The third plate 66 can be used together with the seat part 10 in the leadership 24 hook in by the tenon 76 of the bearing elements 72 in the space 38 of the leadership 24 forming first and second plates 28 . 30 brought and the head area 87 of the locking element 86 through enlargement 64 of the longitudinal slot 60 the second plate 30 is stuck. The bearing elements 72 can now be moved between an upper end position and a lower end position within the guide. Is the seat part 10 in his in 1 shown sitting position, take the bearing elements 72 an upper position. Will the seat part 10 folded up from this position so that its front edge 14 the head area ensures 87 the in the longitudinal slot 60 guided locking element 86 making sure that the third plate 66 not from the second plate 30 can be pivoted away. Rather, there is only a relative displacement along the longitudinal slot 60 possible. At the same time, the bearing elements move 72 in the leadership 24 down until they reach their lower end position, like the 2 shows. The locking element reaches in the lower end position 86 the extension 64 of the longitudinal slot 60 so the head area 87 of the locking element 86 can emerge from the slot. When the seat part is raised again 10 this will be with the third plate 66 around the axis of the bearing elements 72 swiveled until the seat 12 on the back surface 20 comes to the plant. During this movement, the seat part has 10 lowered so far that its front edge 14 not up over the top edge 22 of the backrest part 18 protrudes ( 3 ).
In the final phase when the seat part is folded up, the nose moves 80 the third plate 66 in the slot 46 the first plate 28 , The insertion is due to the conical shape of the slot 46 facilitated. This results in a lateral fixing of the rear area (which in the folded-up position becomes the lower area) of the seat part 10 , so that in the folded position a stable position fixation of the seat part 10 given is.
To fold up the seat part 10 to support is an operating lever 90 on the swivel bearing axis 58 hinged. The operating lever 90 carries two laterally arranged rollers in its central area 92 and is by a spring 94 towards the bottom 16 of the seat part 10 crowded so that when pivoting the seat part 10 the roles 92 on the bottom 16 unroll and the spring force on the seat part 10 transfer. On the operating lever 90 is one to the seat part 10 pointing tab 96 arranged. If the seat part 10 is fully folded up ( 3 ), grabs the tab 96 from the underside to the side of the seat part 10 or on the third plate 66 attached pin 88 on. Should be caused by inertia or by pulling on the leading edge 14 of the seat part 10 a force to fold down the seat part 10 be applied, so the cone 88 against the tab 96 pressed and prevents a folding movement. Only when the operator uses one on the operating lever 90 attached handle 98 the operating lever 90 from the bottom 16 of the seat part 10 pivots away, the locking engagement between the tab is released 96 and cones 88 and allows the seat part to be folded down 10 ,
Even if the invention has only been described on the basis of an exemplary embodiment, many will become apparent to those skilled in the art in the light of the above description and the drawing various alternatives, modifications and variants that fall under the present invention.

Claims

Vehicle seat, in particular passenger folding seat for agricultural or industrial vehicles, with a seat part ( 10 ), which from a sitting position ( 1 ) in a folded up position ( 3 ) is pivotable, characterized in that in the rear area of the seat part ( 10 ) a plain bearing device ( 72 ) is provided, which is mounted in a guide that can be mounted on the vehicle 24 ) slidably guided and around an axis ( 76 ) the plain bearing device ( 72 ) is pivotally mounted, such that when the seat part is folded up ( 10 ) the plain bearing device ( 72 ) from an upper position along the guide ( 24 ) slides down and at the same time relative to the guide ( 24 ) twisted.
Vehicle seat according to claim 1, characterized in that a backrest part which can be mounted on the vehicle stand ( 18 ) is provided and that the seat part ( 10 ) in its folded up position on the backrest part ( 18 ) is present.
Vehicle seat according to claim 1 or 2, characterized in that the guide ( 24 ) by at least one first plate ( 28 ) and a second plate ( 30 ) is formed, with a first area ( 40 ) of the first plate ( 28 ) and a first area ( 50 ) of the second plate ( 30 ) are arranged in parallel one above the other and the first areas ( 40 . 50 ) of the plates ( 28 . 30 ) are spaced from each other, so that a space ( 38 ) of constant width, which the slide bearing device ( 72 ) at least partially.
Vehicle seat according to one of the preceding claims, characterized in that the guide ( 24 ) at least a first plate ( 28 ) and a second plate ( 30 ) contains that the first plate ( 28 ) a backrest part ( 18 ) carries that first plate ( 28 ) and the second plate ( 30 ) using distance means ( 32 ) are connected to each other and that the first plate ( 28 ) and / or the second plate ( 30 ) can be connected to the vehicle stand.
Vehicle seat according to claim 3 or 4, characterized in that first regions arranged parallel to one another ( 40 . 50 ) of the first plate ( 28 ) and the second plate ( 30 ) have essentially the same orientation as a backrest part ( 18 ).
Vehicle seat according to one of claims 3 to 5, characterized in that the seat part ( 10 ) on a third plate ( 66 ) is mounted and that at least a first area ( 68 ) the third plate ( 66 ) in the sitting position over the first areas arranged parallel to each other ( 40 . 50 ) of the first and the second plate ( 28 . 30 ) lies and is aligned essentially parallel to these.
Vehicle seat according to claim 6, characterized in that the third plate ( 66 ) a second area ( 70 ) with the first area ( 68 ) the third plate ( 66 ) encloses an angle.
Vehicle seat according to claim 7, characterized in that the second region ( 70 ) the third plate ( 66 ) has essentially the same orientation as the seat part ( 10 ).
Vehicle seat according to one of claims 6 to 8, characterized in that the slide bearing device ( 72 ) in the area of the upper end in the sitting position ( 71 ) the third plate ( 66 ) is attached.
Vehicle seat according to one of the preceding claims, characterized in that the slide bearing device ( 72 ) two pin elements aligned horizontally in the assembled position of the vehicle seat ( 76 ), each of which has the seat part on one side ( 10 ) holding third plate ( 66 ) are arranged so that the free pin ends are directed towards each other and into the guide ( 24 ) intervene.
Vehicle seat according to one of claims 7 to 10, characterized in that the second plate ( 30 ) a second area ( 52 ) with its first area ( 50 ) encloses an angle so that the second area ( 70 ) the third plate ( 66 ) over the second area ( 52 ) of the second plate ( 30 ) and both areas ( 52 . 70 ) are aligned essentially parallel to each other.
Vehicle seat according to one of claims 7 to 11, characterized in that the third plate ( 66 ) towards the second plate ( 30 ) pointing locking element ( 86 ) which is in a second area ( 52 ) of the second plate ( 30 ) formed central longitudinal slot ( 60 ) intervenes.
Vehicle seat according to claim 12, characterized in that the locking element ( 86 ) a head area ( 87 ) from the second plate ( 30 ) and its dimensions are larger than the width of the longitudinal slot ( 60 ) is.
Vehicle seat according to claim 13, characterized in that in the longitudinal slot ( 60 ) an extension ( 64 ) designed to insert and withdraw the head area ( 87 ) of the locking element ( 86 ) enables.
Vehicle seat according to claim 14, characterized ge indicates that the extension ( 64 ) in terms of the buckling area ( 62 ) between the first and second area ( 50 . 52 ) of the second plate ( 30 ) is formed, remote position.
Vehicle seat according to one of claims 6 to 15, characterized in that on the backrest part ( 18 ) opposite end ( 44 ) of the first plate ( 28 ) a middle slot ( 46 ) which corresponds to the inclusion of a nose ( 80 ) which is used with regard to the seat part ( 10 ) remote end ( 71 ) the third plate ( 66 ) is trained.
Vehicle seat according to claim 16, characterized in that the slot ( 46 ) towards the plate edge ( 44 ) conical opening section ( 48 ) having.
Vehicle seat according to one of the preceding claims, characterized in that a on the vehicle stand or on parts of the guide ( 24 ) attachable to a swivel bearing axis ( 58 ) swiveling operating lever ( 90 ) is provided which is supported by a spring ( 94 ) against the bottom ( 16 ) of the seat part ( 10 ) is pressed.
Vehicle seat according to claim 18, characterized in that in a to the pivot bearing axis ( 58 ) spaced area on the operating lever ( 90 ) at least one rotatable roller ( 92 ) is mounted, which when swiveling the seat part ( 10 ) on the bottom ( 16 ) of the seat part ( 10 ) rolls.
Vehicle seat according to claim 18 or 19, characterized in that at the free end of the actuating lever ( 90 ) a handle ( 98 ) is arranged.
Vehicle seat according to one of claims 18 to 20, characterized in that the actuating lever ( 90 ) one to the seat part ( 10 ) directed tab ( 96 ) protruding from one on the bottom ( 16 ) of the seat part ( 10 ) or on the third plate ( 66 ) attached pins ( 88 ) attacks if the seat part ( 10 ) occupies its fully erect position.